3421865 has 4 divisors (see below), whose sum is σ = 4106244. Its totient is φ = 2737488.

The previous prime is 3421861. The next prime is 3421867. The reversal of 3421865 is 5681243.

3421865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2050624 + 1371241 = 1432^2 + 1171^2 .

It is a cyclic number.

It is not a de Polignac number, because 3421865 - 2² = 3421861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3421861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342182 + ... + 342191.

It is an arithmetic number, because the mean of its divisors is an integer number (1026561).

Almost surely, 2^3421865 is an apocalyptic number.

It is an amenable number.

3421865 is a deficient number, since it is larger than the sum of its proper divisors (684379).

3421865 is an equidigital number, since it uses as much as digits as its factorization.

3421865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684378.

The product of its digits is 5760, while the sum is 29.

The square root of 3421865 is about 1849.8283704171. The cubic root of 3421865 is about 150.6911072115.

The spelling of 3421865 in words is "three million, four hundred twenty-one thousand, eight hundred sixty-five".